Screen frame and shoe for supporting the same



v Oct. 27, 1925 1,558,727

- J. o. WAGNER SCREEN FRAME AND SHOE FOR SUPPORTING THB SAME Filed Nov. l, 1922 2 eats-Sheet 1 l 21 5 Jahn. @Way/7er.

by S y# Patented Oct. 27, 1925.

UNITED STATES PATENT OFFICE.

JOHN O. WAGNER, OF CHICAGO, ILLINOIS.

SCREEN FRAME AND SHOE FOR SUPPORTING THE SAME.

Application led November 1, 1922. Serial No. 598,237.

certain new and useful Improvements in Screen Frames and Shoes for Supporting the Same; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the numerals of reference marked thereon, which form a part of this specification.

This invention relates primarily to a screen shoe in which screens of varying width may be retained and from which the screen may be removed by an endwse or vertical movement according to the width of the screen.

In the past, it has been customary to use a shallow guide channel on one side, and adeeper guide channel on the other side to form the shoe, with a spring in the wider guide channel whereby the screen could be removed by an endwise lateral movement. This deep guide was never more than a half inch in depth, so that it was impossible to retain kscreens of varying width and the screens accordingly had to be manufactured to within one-sixteenth of the size of the window.

It is an object of this invention to overcome the above noted objections, by using a deeper guide channel preferably over an inch in depth and securing the springs to the inner rear walls thereof whereby it is possible to use screens varying yas much as threequarters of an inch or more in width. This construction also provides for any variation arising from the swelling or shrinking of the window frame or settling of the building.

In the past, it has also been customary to provide a frame embodying rockable gripping members for clamping the sheet of forarninous material therein. As constructed this frame could not be readily disassembled nor was the sheet of fora'minous mate rial always equally stretched. It is therefore also an object of this invention to provide an improved screen frame which can be readily disassembled and in which the sheet of foraminous material will be equally stretched.

lVith these and other objects in view, which will become more apparentlin the following description and disclosures in the drawings, this invention comprises the novel structure and combinations hereinafter described and more particularly pointed out and defined in the appended claims.

In the accompanying drawings, which illustrate a preferred embodiment of this invention, and in which similar reference numerals refer to similar features in the dif ferent views:

Figure l is an elevational view of a window with the screen involving my invention applied thereto.

Figure 2 is an enlarged section upon the line 2*-2 of Figurel 1.

Figure 3 is an enlarged fragmentary section upon the line 3 3 of Figure 2.

Figure 4 is an enlarged section upon the line 4-4 of Figure 3.

Figure 5 is a section upon the line Figure 4.

Figure 6 is an enlarged sectional view through one side of the screen frame.

Figure 7 is a fragmentary plan view of the front :surfacel of the rockable gripping members within the frame.

In referring now to the drawing, the screen frame is illustrated as consisting of a plurality, four in the present instance, of frame members 1, two of which constitute the sides and two constituting the top and bottom of the frame.

Each frame member is preferably stamped from metal to produce a contour or cross section :having terminal outwardly bowed portions 2 and 3 with an intermediate raised or fulcrum portion 4. The outwardly bowed portion 2 is provided with an inwardly eX- tending outer flange 6 which is substantially of arcuate or curved form, except at its free end which has a slight nturned lip 6, while the outwardly bowed portion 3 is provided with a marginal lip 7 forming a curved or cam-like approach to the bowed or concave portion 3 so that the front wall of the portion 3 slopes forwardly except at the base of the lip 7.

These frame members have their ends formed to provide miter joints .and they are rigidly connected together by angle caps S which are stamped or provided with grooves to lit the outer surfaces of the frame members, and screw bolts connect the adjacent frame members to said angle caps. The grooves in the cap pieces that receive the bowed portions of the frame members provide a very rigid joint that prevents all distoi-tion 4oftherfrai'ne' or shear uponthe screw bolts;` so 'that a very light rigid and durable screen frame is provided.

IVithin the screen fra-ine are a plurality of rockable gripper members, one in each side, and one at theltop and 'one at theV bottom, which serve to stretch and clamp the -foraminous sheet of material 9 to the frame. As these gripper members are of the same general fdesignl, only 'onef h as `been' illustrated. Figs 14 Land'6"fshoiv the 'form of rockable gripper Y member to best' -adifantage The same consists preferably 'of'a stamped metal plate `having an intermediate portioiifoi-m4 ling-a. :fulcrum 10 resting andfrockable upon' the'fulcrumltof the-frame, itsouter edge being formed into a slight arcuate curl 11 that slidiiigly engaigesth'e curved or arcuate flange' 6. Itsinner edgev is formed into a bowed portion havingv a flange- 12" provided with spaced and 'slight` projectionsl 13- v(Fig. 7) Ywhichrin the present instance'are stamped outwardly! oftheange 12. These projections serve togrip the 'foraminous sheet of Y'material and'insurevan even pull and stretching of the same whenthc rockable gripper membersl farei clamped into Ioperative position.

Iii-Fig. 'the partsffare shown initlieir inoperative position with a margin of the 'fora'iriinous'fisheetfi) zextendiirg over the lip 7 and into :the inner side` of the lscreen f frame. The rockable member is so designedl that the` inner flange' 12 will friction'ally venter .withinthe bowedfprortion of the frame,

while the outer'curveden'd or ta'i'l- 11' will rid'einwardly! against'i thewiiange Gv of the frame v It ise-.tlierefore evident tha-tby` haininering or pressing upon the topfef theinner portion of. the yrocleible gripper member with thef fo-ifaniin'o-ussheet upon fthe lipf, as shown in-Fifgr', theaange l2-.will be forced within the portion 3V and' will draw and clampfthe-margin fof the sheet therebetween,

while its" outer edge end-willbe elevated against-the ylipia.' It will of coursebe understood that the-otherv roc-liable gripper members VVare operablethe same ima-nner forI clamping-fthe other inargi-iis of the f screen'.- Y

. its-clamping engagement in the frame, the

grippingmember-rocking or pivoting upon itsfffn'l'crunr--lO during. -such operation'.

face '-anrl an-A -inner.-lip.. against., which the outerend -ofithe-rockable member presses in loperative positiom-c-as:shown-in Fig. 4E, it becomes.: passible. toi readily: rock the grip-- ping members .to their inoperative position,

- In constituctingfthejlange-G witha curvedsursince the inner surface ofI the outwardly bowed portion 3 of thel frame has a gradual forward slope except at the base of the projecting lip over Vwhich the forward end Y of the rockable member can readily snap. These particular structuralfeatures are mportant in allowing the parts to be disassembled withoutidistorting the same and rendering the same unlit for further service.

The novel form of screen shoe-,comprisesa pair of' guide channelsI 14 and 15 which are so designed as to projectsuiiiciently forward in the guide channel so Vthat theymaypress various .sizes of screen firmlyinto lthe guide channel 14. If thef'screen-is not too wide, it may be removed or inserted in the' shoe by -an endwise movement asb-yfforcing itv in the wide guidechannelagainstthe springs until the-opposite edge clears the guidev channel 1a. If it isltoo wide-to thuswise clear the guide channel 14, it may. be linserted in or removed from' the shoe by sliding itvertical-ly upwardoutofthe shoe as is obvious, the: upper. ends ofi-the yguide channels being left open for thisrpurpose. g

Itv will be appa-rent that my improved screen shoemay be applied-tewindows differingin widthand nevertheless accommodate and retain the same :size ofV screen', so that-.it becomes unnecessaryto construct the screensto exactly t thewindows-bu-t they only need be constructed in standardsizes varying `ngftihe .neighborhood .of onehalf of aii ineli.. ItV will. also :be apparent that Vwith thev use 'of mysim'proved -frame,the sheet of foraniino'us material is` equally., stretched and may be-:readilyxremoved without distorting or clama-ging..theframe.

I am aware that numerous details of construction may be varied through a wide range. without departingfrom the principles of thisA invention,l and I therefore do not p-urikiese-limiting the patent granted otherwise than `necessitated by the prior art.

I claim. as my invention:

1. In ascreen frame', afname member having anintermedi-ate raised fulcrum, an' outer arcuate fiaiige -w-i-than inwardly ,extending lip and an inner curved vor slopingportion provided with a marginal lip,I anda vrockable member within saidframe member having anrintermediate fulcruni restingfupon thet fulcrumo'f said framel member, and. lha-ving an .arcuate outer edge in' slid-able engagement y with xsaidarcuateiiangeand afflangedinner edge adapted-Ptoy be wedgedk within -said curved ,portion ofs'aid frame member for the purpose described.

edge in slidable engagement with said arcuate flange and a flanged inner edge provided 10 With spaced projections itting Within said inner curved portion of said frame member.

In testimony whereof I have hereunto subscribed my name.

JOHN O. WAGNER. 

